Home / 21,279.92-29,365.62-11,848

Finding the Fourth Proportional to 21,279.92, 29,365.62 and 11,848

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Solution

The fourth proportional to 21,279.92, 29,365.62 and 11,848 is: 16,349.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.92 : 29,365.62 = 11,848 : x
  2. Step 2: Convert to fraction form
    21,279.92/29,365.62 = 11,848/x
  3. Step 3: Cross multiply
    21,279.92x = 29,365.62 × 11,848
  4. Step 4: Simplify right side
    21,279.92x = 347,923,865.76
  5. Step 5: Solve for x
    x = 347,923,865.76/21,279.92
  6. Step 6: Final answer
    x = 16,349.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.